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Chemistry Chapter 12 : Test Yourself
1 / 4
Which of the followings is not a water borne disease?
Reasoning: ● Water-borne diseases spread through contaminated water(like hepatitis, typhoid, dysentery).● Anemia is caused by lack of iron or blood loss, not watercontamination.
2 / 4
Which human activity results in contamination of water bodies?
Reasoning: Livestock waste, pesticides, and septic tanks all release pollutants into water, causing contamination.
3 / 4
pH of distilled water is
Reasoning: Pure distilled water is neutral, so its pH is 7 at 25°C.
4 / 4
Anhydrous copper (II) sulphate is _________ solid.
Reasoning: Anhydrous copper (II) sulphate is white, and it turns blue when it absorbs water (becomes hydrated).
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